MATH
posted by Anonymous .
A pharmacist mixed some 10%saline solution
with some 15%saline solution to obtain 100 mL of a 12%saline solution. How much of the 10%saline solution did the pharmacist use in the mixture?
A 60 mL
B 45 mL
C 40 mL
D 25 mL CAN SOME GIVE AN EQUATION TO HELP MY SOLVE THIS PROBLEM THIS IS THE ONLY WAY TO SOLVE THis problem

x ml of 10% >0.1 x salt
(100x ml) of 15% > 0.15(100x) salt
total salt = .1x + 15  .15x = 15.05x salt
so
15.05x = .12(100) = 12
3 = .05x
x = 60 ml
Respond to this Question
Similar Questions

math
a pharmacist mixed some 10% saline solution with some 15% saline solution to obtain 100ml of a 12%saline solution.How much of 10% saline solution did the pharmist use in the mixture.dO NOT UNDERSTAND TO MUCH INFO. 
Algebra
A saline solution was made by mixing 11 ml of a 36% saline solution and 6 ml of a 53 % saline solution. How do I find the consentration of the new mixture? 
algebra
Nurse erika needs to prepare 12 liters of a 10% saline solution. The stockroom only has 7 % and 15% saline solutions. How much of each solution should erika mix together to get 12 litres of a 10% saline solution 
algebra
Nurse erika needs to prepare 12 liters of a 10% saline solution. The stockroom only has 7 % and 15% saline solutions. How much of each solution should erika mix together to get 12 litres of a 10% saline solution 
math
you have an unlimited supply of 5% saline solution and 8% saline solution. How much of each type would you have to use to create 60 ounces of 7% saline solution? 
math
A pharmacist mixes 14 ounces of 68% saline solution with 55% saline solution. If the final mixture is 62% saline, how many ounces of the 55% solution were used? 
Math
A saline solution is 20% salt. How many gallons of water must be added to dilute the mixture to 8 gals of a 15% saline solution? 
Math Mixture Word Problem
How much water must be added to 1 liter of a 5% saline to get a 2% saline solution 
math
scientist is mixing a chemical solution for an experiment solution contains 3/8 of chemical solution 1/6 ounce saline solution what is the unit rate of chemical to saline solution? 
Algebra 1 college
How much of a 12% saline solution should be mixed with a 4% saline solution to obtain 40 milliliters of a 6% saline solution?